Passive switching ethernet hub



FIG. 1 is a perspective view of an ornamental design for a passive switching ethernet hub for networking;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a back elevation view thereof;

FIG. 4 is a left elevation view thereof;

FIG. 5 is a right elevation view thereof;

FIG. 6 is a top elevation view thereof; and,

FIG. 7 is a bottom elevation view thereof. 

The ornamental design for a passive switching ethernet hub, as shown. 